Q: What is the least number that both 21 and 23 can go into?

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23 is a prime number.

19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.

The fraction 21/23 cannot be simplified. You could muliply both of them by the same number, and get a fraction like 42/46, but it's better to keep fractions simplified.

Put them in order from least to greatest then find the middle number. In this case there are two 23 and 29 if you need one number I forget the formula, sorry.

Only 23 is a prime number.

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The Least Common Multiple (LCM) for 23 21 is 483.

To find the least common multiple of numbers there are two methods. #1 You list the multiples of each number. Identify the least number that is on both lists. #2 Find the common factors of the numbers. In this case their are no common factors because 23 is prime. Here's what you do: 1. Find the prime factorization of 21 and 23. 21=7*3 23=23 2. Take the factors and multiply them all together once because each one is only shown once. 7*3*23=? 3. 7 times 3 equals 21 times 23 is 483. LCM=483

It is: 483

21 22 23 24 which is the prime number

23 is a prime number.

19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.

21 is composite.

966

The fraction 21/23 cannot be simplified. You could muliply both of them by the same number, and get a fraction like 42/46, but it's better to keep fractions simplified.

Put them in order from least to greatest then find the middle number. In this case there are two 23 and 29 if you need one number I forget the formula, sorry.

23

19, 20, 21, 22, 23